Multiple-chamber oven



N4. Wl 0% R1 i. NMS Mm. .Cm IEA L wm TH. MF M 2. 2 9 1l 9 11 D rf WW @,mfwn fw n df M Patented Dec. 19, i922.

entran lstaires Hlearenfri Ivan' KING, or Los ANGnLnsoALrronNri/i.

MUL'rrrLn-GHAMBER ovnN.

Application inea April 6,1921. serial 116.458,96;

of ovens and is. peculiarly adaptable to those ovens in which the baking process is lproceeded with as a continuous operation.

I have toundthat in the construction'ot continuous operating ovens it `is very dithcult to provide for an even distribution of heat from the top and bottom ot' the baking chamber, due to the fact that theapplication ot heat is mainly from a single direction, and therefore enters the baking' chainber from but one portion ot its radiating surfaces, whereby a very uneven heat is maintained within the baking chamber making entirely satisfactory results very diiiicult to obtain. y

.it is an object ot my invention to provide an oven in which the baking chambers are subjected to the application of heat trom above well as'froin below, and also to pro-` vide such an oven in which the baking chainbers will be maintained at a slightly greater' tennierature in the :forward portion tha-nin the rear. f p

ft a Further object to provide an oven comprising a l'attery oit baking chambers, the heat tor operation o'lI which will" be supplied from. a` single source, thereby providing an even temperature within the sev eral baking chambers. Further objects will become evident hereinafter.

With reference to the drawing which is ttor illustrative purposes only; l

Fig. 1 is a vertical cross section ot the 'construction I employ and is taken on a plane represented by the line 1-*1 of- Fig. 2.

Fig. 2 is a vertical longitudinal section oit the oven and is taken on a plane represented by the line 2-2 ot Fig. 1.

Fig. 3 is a vertical longitudinal section similar to that shown in Fig. 2, but is taken on a plane represented by the line of Fig. 1.

-Fig. L1 is a section taken on a plane repre-- sented by the line 1 4 of Fig. 2.

Fig. 5 is a section taken on a plane represented by the line 5-5 ot Fig. 2.

Similar parts are represented by similar vthe central portions.

characters throughout the Aseveral views ot the drawing. y

The embodiment of my invention shown consists of .a surrounding Wall structure 11 which is made' to enclose a series ot superimposed baking chambers 12 in'such a man- `ner as to provideci'r'culating channels 13 and 14 around said baking chambers, and a source ot heat such as a combustion chainber l18 having a suitable oil or gas burner `19 extending inwardly through a port 20.

The'baling chambers'l are constructed 'ot' some `heat conducting material, pre'fen are insulated as shown to prevent the 'radia `tion ot heat therethrough, which condition would cause a 'greaterheating of the. side portions ot' the baking chambers than ot n It will be noticed that the ycirculating channels 13 and lll are formed by dividing theexisting baking chamber heating space surrounding the bale to provide passages 3T between the ends 3G of the division walls and the centrally extending partition walls 30.

The combustion chamber extends the full length of the oven structure and is located in the forward lower part thereof in a position underneath the circulating channels 13, as shown in Fig. 1 oiz the drawing, and a discharge tine 40 situated oppositely from the burner 19 is employed to carry the combustion gases back to a chimney or stack Al1 open atmosphere.

The heat generated by the combustion of gases injected into the combustion chamber by the burner 19 is radiated through the walls of the combustion chamber, as indicated by the arrows in Fig. 1, heating the surrounding air which due to its lighter weight `from whence they are delivered into the i Contact with both the bottoms and the tops "of each succeeding bakingchainber, and as little heat radiates through the side walls 28 .of the baking chambers the interiors thereof receive a very even heat. Upon `reaching the highest point within the circulating chambers 13, the partially .cooled airpasses through anopening 46 provided between the upper ends` of the partition walls 31 and the upper portion of the partition wall 30,v ,as illustrated in Fig. t and assumes a downward. course throughI the channels 14 as shownby the indicating rows in Fig. Sandpasses inand out between the "baking chambers in direction ot' flow vopposite to that in the lcorresponding portionsof the channels 13. `Upon reaching the lower end of the circulation channel 14, the air passes out and around the delector plate 415 into lthe collecting chamber L17 in a soinewhat cooled condition and passes `forward,l

as indicated `by the arrowsinV Fig. 1, to again be lheated by the conduction of heat through thewalls of the combustion chain- 4ber and enters Iupon another circulating channels. l j

Y l claim as my invention: i

1. `In a bakersoven the `combination off La `heatinsulated `Chamber provided with doors in the front-wall thereof; a series of superimposed baking -chainbers formed ot sheet ironand arranged one above the other inside said chamber, each baking chamber being accessible through one of said doors; horizontal inwardly extending division walls between `adjacent baking chambers, said walls having an opening,4 near the center thereof; partition walls extending Avertically "between adjacent baking chambers through circuit of the openings in said horizontal walls; and

a combustion chamber in said heat insulated chamber below the lower baking chamber.

2. In a bakers oven the coinbination'of: f

a heat insulate-d chamber provided with doors in the front wall thereof; a series ot superimposed baking chambers formed of sheet iron and arranged one above the other inside said chainber, each baking chamber being accessible'through one of said doors; horizontal inwardly extending division walls between adjacent baking chambers, said walls having an opening near the.A center thereof; partition walls extending vertically between adjacent baking chambers through the openings in said horizontal walls laterally extending partitions extendingv at right angles to said partition.,walls4 between said baking chambers; and a coin f tical laterally extending partition walls ccn- 'trally locatedparallel to the sides oit said heat insulated chamber;` and a heating ineans inside said chamber below the lower baking .chamber, said horizontal walls and vertical partition walls bein0r so perforated that there is a continuous circulation oi' heated air around all ci said baking charnbers.

Iii-testimony whereof, I have hereunto set my hand at Los Angeles7 California1 this 28th day of March, 1921. l

i i IVAN KING- 

